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Truckee River Water Quality Monitoring Program - Middle Truckee River, California

As Small Municipal Separate Storm Sewer Systems (MS4s), Placer County (County) and the Town of Truckee (Town) must comply with the State’s general National Pollutant Discharge Elimination System (NPDES) permit for stormwater discharges. In accordance with this permit, the County and Town have each developed Storm Water Management Programs (Placer County, 2007 and Town of Truckee, 2007) which were required by the Lahontan Regional Water Quality Control Board (Lahontan) to include the development of a comprehensive water quality monitoring plan for the Middle Truckee River Watershed. Additionally, Clean Water Act 303(d) Total Maximum Daily Load (TMDL) programs are being implemented in both Squaw Creek and the Middle Truckee River. In response to these regulations, the Truckee River Water Quality Monitoring Plan (TRWQMP) (2NDNATURE, LLC, 2008) was developed collaboratively by the County and Town to cost-effectively assess the effectiveness of their ongoing SWMPs with respect to protecting downstream water resources.

The TRWQMP is a fifteen year comprehensive water quality monitoring plan that is intended to be implemented in three phases. Phase 1 is scheduled to occur over a three to five year period and the County and Town began implementation during the 2010 water year (WY 2010) (October 1, 2009 through September 30, 2010). Phase 2 is planned for Years 4 and 5 (2013-2014), and Phase 3 is planned for Years 6 through 15 (2015-2024). The level of implementation will depend on a number of factors including cooperation by other independent entities conducting water quality monitoring in the watershed and the availability of funding.